Type casting machines



Filed July 12, 1957 INVENTOR KARL DEBUS &

United States Patent TYPE CASTING MACHINES Karl Debus, 2 Fichtestrasse,Bad Homburg vor der Hohe, Germany Filed July 12, 1957, Ser. No. 672,104

2 Claims. (Cl. 199'60) This invention relates to the connection betweenthe interchangeable ejector rods with which the ejector blades areconnected and the ejector slide of modern typecasting machines in whichthe ejector rods are arranged in sideby-side relation, which slide isprovided with a bar which is connected to the slide and couples a lug onan ejector rod, to which the ejector blade is connected, to the slide.

This application is a c ontinuation-in-part of application SN. 409,140,filed February 9, 1954, now abandoned.

A particular disadvantage of the known connections is that in order todisconnect the bar, it is necessary to specially dismantle the deviceand certain cover plates have to be removed, in particular this takes agreat deal of time.

According to this invention this disadvantage is overcome very simply ina type-casting machine by connecting the bar to the slide by means of aleaf spring or the like which may preferably be actuated by hand, andagainst the resilient force of which the bar is moved out of the lockingdevice in the coupling position. The spring may either carry the barimmediately, or actuate an element to which the bar is connected. In itsnormal position, for example, the spring urges the bar into the couplingposition. By lifting the actuating spring, which may, for example, beprovided with a special handle or be curved gently upwards, the bar ismoved out of its position behind the lug on the ejector rod to which theejector blade is connected. The ejector blade can thus be freed fromconnection with its respective ejector rod and can easily be exchangedfor a new one.

The leaf spring or the like may be detachably connected to the slide,for example, by means of one or more screws.

The connection can, moreover, be actuated simply by raising the leafspring by finger actuation.

One embodiment of the invention is hereinafter described, by way ofexample, with reference to the accompanying drawing which shows apartial longitudinal section through the slide and the rear end of anejector rod to which an ejector blade is connected.

The casting wheel slide A is provided with guiding slots B for theejector rods C. These ejector rods C carry each on their ends facing thecasting wheel D a flat ejector blade E, and on their other ends each onelug F by means of which each rod is shifted from one side by thecoupling latch G toward the casting wheel D, .as well as is withdrawn bythe returning bar H.

Bar H is resiliently connected to the ejector slide K by means of leafspring I in such a manner than when part L which serves as a handle islifted, for example by hand, the bar H connected thereto is moved outfrom the path of all lugs P, so that the ejector rods C may be pulledthrough engagement of the ejector blades E forwardly, i.e. in thedirection of the casting wheel D. The cover plate M forming theccunterguide for the ejector blades E is provided with grooves N at itsside facing the lugs F so as to let pass the lugs F of rods C.

The lost motion Q serves to assure the grasping of the lugs F of theejector rods C between the coupling latch G common to said latch and thereturning bar H also common to said latch which is of essentialimportance if the so-called format and thus the ejection width of thecasting lines is increased since, without this play it could happen thatthe coupling latch G strikes laterally against lug F and does not comebehind the said lug, as it should. Furthermore, the lost motion Q makescertain that the returning bar H will grip over the lugs F uponreplacement of rods C.

What I claim is:

1. A type-casting machine comprising a plurality of interchangeableejector blades, each connected with an ejector rod having a lug at itsend opposite to the blade connecting end, an ejector slide, a returningbar disposed transversely of said ejector rods and said lugs to overlieall rods, a single leaf spring for connecting said rods with the saidslide, said leaf spring being detachably secured at its one end to saidslide, bear-ing at an intermediate part thereof said returning bar andthereby being adapted to urge said bar by its own resilient force in alug latching position to prevent movement of said rods in the ejectiondirection, said spring also extending freely beyond said bar in thedirection toward said blades and having an end slightly bent upwardly toprovide a handle allowing a lifting of the said bar out of its lugengaging position against the resilient force of the leaf spring.

2. A type-casting machine as in claim 1, having a coupling latchdisposed on said slide parallel to said bar to transmit ejectionmovement to said ejector rod and disposed at a distance from said barrelative to the width of said lug to provide lost motion between theforward and backward motion of said rods.

References Cited in the file of this patent UNITED STATES PATENTS560,537 Randall May 19, 1886 799,792 Keenan Sept. 19, 1905 1,082,059Wood Dec. 23, 1913

